Break the door that shut yourself
A carpenter makes a good door. He made a door for his house, which he thought was made of solid material and well made, and would last a long time.
After some time, the nail of the door rusted, and a board fell off. The carpenter found a nail and repaired it, and the door was as good as before. Soon another nail fell, and the carpenter replaced it with another nail. Then another board broke, so the carpenter found another board to replace it. Then the latch broke, and the carpenter replaced it with another...
Several years later, although the door has been broken numerous times, it is still strong and durable after careful repair by carpenters. The carpenter was very proud of this: thanks to his craft, otherwise he would not know what to do if the door broke down.
One day, a neighbor said to him, "You are a carpenter, look at your door!" After a careful look, the carpenter found that the neighbor's doors were new in style and good in quality, while his own door was old and broken and full of patches. The carpenter understood that it was his craft that hindered the development of his "door".
Lesson: It's important to learn a trade, but it's even more important to think differently. Industry attainments are a treasure, but also a door, will close themselves. In the face of new changes in the new world, we must have the courage and determination to break the "invisible door" that shuts us down, reflect on and improve our "craft" in time, so that we can see more beautiful scenery outside.